Herein, carbon nanotube (CNT) supported PdM (M=Cr, Ta, Bi, Hf) catalysts are prepared by sodium borohydride (NaBH4) reduction method. The analytical techniques such as X-ray diffraction (XRD), scanning electron microscopy-energy dispersive X-ray (SEM-EDX), and X-ray photoelectron spectroscopy (XPS) are utilized for the characterization of the bimetallic catalysts. The ammonia borane electrooxidation activities of the bimetallic catalysts are defined by cyclic voltammetry (CV) measurements. The stability of the bimetallic catalysts and resistance to ammonia borane electrooxidation are determined by using chronoamperometry (CA) and electrochemical impedance spectroscopy (EIS) measurements. The highest catalytic activity for ammonia borane electrooxidation is obtained as 52.60 mA/cm2 with PdCr/CNT catalyst. PdCr/CNT catalyst with high catalytic activity could be promising as an anode catalyst for direct ammonia borane fuel cell.

中文翻译：

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CNT 负载的双金属 PdM（M=Cr、Ta、Bi、Hf）催化剂作为氨硼烷电氧化阳极电极的性能增强


本文通过硼氢化钠 （NaBH4） 还原法制备了碳纳米管 （CNT） 负载的 PdM （M=Cr， Ta， Bi， Hf） 催化剂。利用 X 射线衍射 （XRD）、扫描电子显微镜-能量色散 X 射线 （SEM-EDX） 和 X 射线光电子能谱 （XPS） 等分析技术来表征双金属催化剂。双金属催化剂的氨硼烷电氧化活性由循环伏安法 （CV） 测量确定。双金属催化剂的稳定性和对氨硼烷电氧化的抵抗力通过使用计时安培法 （CA） 和电化学阻抗谱 （EIS） 测量来确定。氨硼烷电氧化的最高催化活性为 52.60 mA/cm2 使用 PdCr/CNT 催化剂。具有高催化活性的 PdCr/CNT 催化剂有望作为直接氨硼烷燃料电池的负极催化剂。